2-micrometer high-pulse energy thulium-doped optical fiber laser of hybrid pump

A high pulse energy, fiber laser technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of wavelength reduction, weak and limited advantages of gain switching technology, and achieve simple structure, easy application and promotion, The effect of lowering the threshold energy

Inactive Publication Date: 2013-05-01
SHANGHAI JIAO TONG UNIV
View PDF4 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the 1.5 micron band pump, due to the reduction of the above process, regular pulse sequences can be obtained, but it is limited by the energy that the pump source itself can provide (although this problem can also be solved by multi-stage amplification of the pump source,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 2-micrometer high-pulse energy thulium-doped optical fiber laser of hybrid pump
  • 2-micrometer high-pulse energy thulium-doped optical fiber laser of hybrid pump
  • 2-micrometer high-pulse energy thulium-doped optical fiber laser of hybrid pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0031] image 3 It is the second embodiment of the present invention. Compared with the basic scheme, this scheme increases the number of continuous laser diode pumping sources 1, so that in some cases, due to the insufficient power of the pumping source itself or the configuration of the laser cavity, the upper energy The problem that the number of super-level particles cannot be accumulated in large quantities has been solved.

[0032] Figure 4 It is the third embodiment of the present invention. Compared with the basic solution, this solution increases the amplification stage of the pulse laser 2, making it possible to obtain a 2-micron pulse with higher energy. The amplification stage is usually a fiber amplifier, consisting of an erbium-doped fiber or an erbium-ytterbium co-doped fiber 11 and a third pumping source 12 . The length of the doped fiber is determined by its absorption coefficient. The pump source is usually a commercial 975nm continuous laser diode pump so...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a 2-micrometer high-pulse energy thulium-doped optical fiber laser of a hybrid pump. The 2-micrometer high-pulse energy thulium-doped optical fiber laser comprises a first fiber grating, a first fiber beam combiner, a second fiber beam combiner, a gain fiber and a second fiber grating, which are connected in sequence, wherein a first pumping source is connected with a second input end of the first fiber beam combiner through a first optical isolator, a second pumping source is connected with a second input end of the second fiber beam combiner through a second optical isolator, the first fiber gating and the second fiber gating form a laser resonance cavity, the first pumping source is a continuous laser diode, the second pumping source is a pulsed laser, and the gain fiber is a thulium-doped fiber. The 2-micrometer high-pulse energy thulium-doped optical fiber laser is reduced in the threshold valve energy of a pumping pulsed light in a gain switch technology, is capable of obtaining pulse with higher energy compared with other laser pulse producing technologies such as regulating Q and mode locking, has the characteristics of full-fiber connection, simple structure and the like, and brings convenience for application and popularization.

Description

technical field [0001] The invention relates to a fiber laser, in particular to a hybrid-pumped 2-micron high pulse energy thulium-doped fiber laser. Background technique [0002] In recent years, fiber lasers using gain-switched pulse generation technology have attracted widespread attention, followed by a large number of related research and applications. The significance of this type of laser is that their output wavelength is in the 2 micron spectral region that is safe for human eyes, and has application value in remote sensing technology, biomedicine, and mid-infrared laser generation. Moreover, compared with other pulse generation technologies, such as Q-switching and mode-locking, they have simple structures, no large insertion components, and are easy to realize all-fiber lasers, which brings great convenience to the productization and marketization of lasers. . In addition, since the trivalent cations of thulium have strong absorption at multiple wavelengths, thi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01S3/094H01S3/11H01S3/067
Inventor 徐剑秋杨建龙唐玉龙
Owner SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap